The pop-up began when a large glass box appeared in Grand Central's Vanderbilt Hall, containing a replica of the four-seated desk from Lumon's Macrodata Refinement department. Hired actors playing Lumon employees sat at their desks, doing Lumon things (by which I mean, sorting numbers while not having a clue what said numbers mean).

January 15, 2025 On January 15, a glass box at Grand Central Station transformed into a live Lumon Industries office as the cast of Severance staged a dramatic public appearance. Adam Scott, Patricia Arquette,